Q. The unit of power in S.I. units is

View solution

Q. The velocity ratio for the second system of pulleys is n.

View solution

Q. The law of motion involved in the recoil of gun is

View solution

Q. When a particle moves along a circular path, its acceleration has two components, one is normal component and the other is tangential component of acceleration.

View solution

Q. A machine which is not capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.

View solution

Q. The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

View solution

Q. The forces, which meet at one point and their lines of action also lie on the same plane, are known as

View solution

Q. The amount by which the outer edge of the rail is raised, is known as super-elevation.

View solution

Q. The unit of energy in S.I. units is

View solution

Q. The angle of inclination of the plane at which the body begins to move down the plane, is called

View solution

Q. Which of the following statement is incorrect?

View solution

Q. According to lami's theorem

View solution

Q. The amplitude is always __________ radius of the circle.

View solution

Q. When a body falls freely under gravitational force, it possesses __________ weight.

View solution

Q. A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following:

View solution

Q. If P is the force acting on the body, m is the mass of the body and a is the acceleration of the body, then according to Newton's second law of motion,

View solution

Q. If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium.

View solution

Q. The friction experienced by a body, when at rest, is known as

View solution

Q. The moment of inertia of a solid sphere of mass m and radius r is

View solution

Q. The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

View solution